Lift and modem: what they have in common

1. Step 1. Lift — is used in — Flaps. More lift at low speed.
2. Step 2. Flaps — is part of — Jet airliner. Flaps.
3. Step 3. Jet airliner — has part — Radar. A weather radar.
4. Step 4. Radar — includes — Doppler radar. A radar.
5. Step 5. Doppler radar — has part — Digital signal processor. It picks out the Doppler shift.
6. Step 6. Digital signal processor — is part of — Modem. Signal processing in high-speed modems.

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